/**
 * Copyright (C) 2012 Oleg Anastassov <o.anastasov@gmail.com>
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package kz.kstu.ent.desktop.util.shell;

import kz.kstu.ent.desktop.util.GUIUtils;
import org.apache.log4j.Logger;

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;

/**
 * @author Oleg Anastassov
 */
public final class SplashScreen {

    public static final Logger LOGGER = Logger.getLogger(SplashScreen.class);

    private static final String SCREEN_IMAGE_PATH = "/screen.jpg";
    private static SplashScreen instance;

    private JFrame window;

    private SplashScreen() {
    }

    public static SplashScreen getInstance() {
        if (instance == null) {
            instance = new SplashScreen();
        }
        return instance;
    }

    public void show() {
        window = new JFrame();
        window.setUndecorated(true);
        window.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        URL imageUrl = this.getClass().getResource(SCREEN_IMAGE_PATH);
        try {
            BufferedImage image = ImageIO.read(imageUrl);
            ImageIcon imageIcon = new ImageIcon(image);
            JLabel imageLabel = new JLabel(imageIcon);
            window.add(imageLabel);
            window.setSize(image.getWidth(), image.getHeight());
        } catch (IOException e) {
            LOGGER.error("Can not read start screen image", e);
        }
        GUIUtils.centerAndShow(window);
    }

    public void hide() {
        window.dispose();
    }
}
